Test Of Manganese Oxide Electrode Materials For Super-capacitor

Super-capacitors, which have another scientific name called electrochemical capacitor, are a new kind of energy storage element. As advanced and clean energy storage, they offer extremely high powers as well as possible high energy densities. So they are expected to play an important role in the field where superior power performance is required. While, existing pseudocapacitance always suffer from limited cycle life and low energy density, due to the phase changes caused by redox reactions when energy is stored/released on the surface or subsurface of the electrode. But even so, given its many advantages, we still expect it to have a broad application prospects in mobile communications, electrical, electronic equipment, aerospace and other fields.Transition-metal oxides, i.e. MnOx, RuO2, NiO, Fe3O4, and CO3O4are one kind of the most promising electrochemical super-capacitor materials, which are attracting widely interest owing to their relative high specific capacitance and high energy density, compared with carboneous materials and conducting-metal polymers. Among these materials, amorphous hydrated ruthenium oxide exhibits remarkably high specific capacitance and excellent reversibility because of the ideal solid-state pesudofaradaic reaction. However, the high cost, low porosity and toxic nature of R11O2limit its practical application. Therefore, some cheap and environmentally friendly metal oxides have received more and more attention. Manganese oxide, Cobalt oxide materials, as promising candidates for electrochemical supercapacitors, satisfy these fundamental requirements, low cost, environment friendly and reasonable high specific capacitance, get more and more attention.Here, we focus on manganese oxides. This article is through a low-cost process is not complex chemical methods to grow nano-scale nickel foam substrate manganese oxide, which was used as super-capacitor electrode material. Through this method, we have make preparation of high specific capacity, while observing and supporting the existence of a significant chemical reaction process redox reaction and its practical significance.